.Number{
    width:150px;
    height:30px;
    border:1px solid #999;
    float:left;
}
.sub_num,.add_num{
    width:30px;
    height:28px;
    text-align: center;
    line-height:30px;
    cursor: pointer;
    display: block;
}
.sub_num{
    float:left;
    border-right:1px solid #999;
}
.add_num{
    float:right;
    border-left:1px solid #999;
}
.sub_num:hover,.add_num:hover{
    background-color:#eee;
}
.num_inp{
    width:80px;
    height:28px;
    line-height:28px;
    text-align: center;
    border:none;
    outline:none;
    padding-left:4px;
    float:left;
}
